How much is good air worth?

[Dave Casey]

Cecil is not the best example in my opinion because I believe it is downhill some.

Jeff's estimate is solid

Thanks guys. We will post results after the Super Pro cars get some rubber down and the starting line is good. I appreciate the advice ... can't add fuel though as we don't have the ability to tune. Not even sure if that is legal in Pure Stock. ??? We have a really good tuner that does ours on the dyno but once you leave him no adjustments. Lows 11.5x would be nice ... almost a second under in a car with OEM heads that we still drive on the street.

Scott

[tj310]

http://www.dragtimes.com/da-density-...e=Calculate+DA ....This is a link to a site that helps with calculations ---Trevor

[Lee Valentine]

At times you get DA readings that look awesome but the ET's aren't what your predictions tell you. This usually caused by a cool temp reading but baro. and humidity aren't that great, happens at Maple Grove and Atco frequently.

[art leong]

At the Gator's this spring. The temps were in the low 70's but the humidity and barometer were killer. So it was a mineshaft.

[Ed Wright]

My old Tag weather station does not give enough weight to humidity. It always predicts too fast in humid conditions. If I wasn't done I would find something better.

[Chad Rhodes]

Originally Posted by Ed Wright

My old Tag weather station does not give enough weight to humidity. It always predicts too fast in humid conditions. If I wasn't done I would find something better.

You're not done, you just think you are

[Dan Fahey]

Originally Posted by Dave Casey

Cecil is not the best example in my opinion because I believe it is downhill some.

Jeff's estimate is solid

Dave just providing my experience.
BTW made a mistake, Cecil is 320 ft. above sea level.
Mason Dixon is 550 ft. above sea level.
The difference is only 3ft and within margin of most tracks.

ATCO and Englishtown are 55ft and 57 Ft above sea level.
Have run comparable best times at cold weather meets.
Englishtown's cold air day winds freezes up the starting line as soon as Sun drops a little.
Ruining making a good run.

Cecil is an easy track to get to.
Sun falls behind the starting line keeping it warmer longer.
Seems to get better air more often than other tracks.
The air feels calmer and more tail wind.

Need to check on this.
Cecil's location may have better weather patterns and terrain.

Englishtown is a consistent Headwind Track.
Can tell watching the planes take off & land at the local airport next door.
Historically most of the records were set at Atco and Etown in April.

Early records from 1975 show consistent one 1-2 tenths better at Cecil compared to Mason Dixon, 75&80, York (at the time), Capitol.

Sure would like to know what other racers records show.
I know Tom Gould kept some serious records.

Dan

[Dave Ribeiro]

Scott,

I think Jeff,Jimmy Jr. & Dave were right on two tenths .. As you know there are many other factors that enter in this discussion .. But, their est. was right on, no sub for experience ... Good Luck testing & write it all down !!

Originally Posted by Dave Ribeiro

Scott,

I think Jeff,Jimmy Jr. & Dave were right on two tenths .. As you know there are many other factors that enter in this discussion .. But, their est. was right on, no sub for experience ... Good Luck testing & write it all down !!

Yep, they were right on it! Here we are on Friday ...


After our last TNT pass Friday night the Check Engine Light came on and the codes indicated the oxygen sensors had gone out. We packed it up and came home and will replace those this week.

Scott